Fig. 3. Hydrogen bonds around the [NH4$H2O]2 2þ unit in 2a (left) and the hydrogen bond network in the crystal of 2a (right). Only relevant atoms are shown
Fig. 3. Hydrogen bonds around the [NH4$H2O]22þ unit in 2a (left) and the hydrogen bond network in the crystal of 2a (right). Only relevant atoms are shown